Production Tooling
Production tooling is what turns a validated prototype into 100,000+ identical parts. Hardened steel molds (typically P20, NAK80, H13, or S136) run for hundreds of thousands of cycles before refurbishment. Per-part cost drops 70–90% versus prototype injection molding once the tool is paid off
Overview
Production tooling carries the highest upfront cost in the manufacturing process, and the lowest per-part cost over the life of the program. A two-cavity steel mold runs $15,000–40,000 depending on part size and complexity. The same mold produces parts at $0.50–3 each over 500,000+ shots.
Tool design decisions made early determine whether the program runs smoothly or fights cycle time, flash, and short shots for years. Cooling line layout, gate location, ejector pin placement, and parting line position need to be locked in before steel is cut. Changes after the tool is in production cost 10–20× what they cost during design review.
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Typical Applications
Concept Models
Early visual and tactile models that lock in form, proportion, and styling before any tooling is committed.
Functional Prototypes
Working parts in production-intent materials, built to verify fit, function, and mechanical performance under real loads.
Engineering Validation
Rigorous testing of strength, durability, and environmental resistance to confirm the design meets performance and safety targets.
Fit & assembly testing
Dimensional and mating checks across components to verify tolerances, clearances, and assembly before scale-up.
Market testing samples
Near-final, cosmetically finished units in small batches for customer, retailer, and certification feedback.
Bridge production
Limited pre-mass runs on near-final tooling that keep you shipping while hard tooling and full production ramp up.
Process Flow
Cost Considerations
Production tool cost is set by four things: cavity count, part size, steel grade, and feature complexity. A two-cavity P20 tool for a 100×100mm part runs $15,000–25,000. The same part in a four-cavity H13 hot-runner tool runs $40,000–70,000. Hot runners cost more upfront but save material on every shot and shorten cycle time by 10–20%.
The cheap tool isn’t always cheaper. P20 steel runs 200,000–300,000 shots before needing rework. S136 stainless on cosmetic parts runs 500,000+ shots and resists corrosion from chlorine-based release agents. Picking P20 to save $5,000 on a 500,000-piece program means rebuilding the tool mid-run.
Cavity Count
Single-cavity for low volume or large parts; 2–8 cavities balance cycle time and tool cost; family molds combine related parts in one tool
Steel Grade Selection (P20 / NAK80 / H13 / S136)
P20 runs 200,000–300,000 shots; S136 stainless holds 500,000+ and resists corrosion from chlorine-based release agents
Cooling Line Design
Cooling layout drives cycle time and warpage; conformal channels via 3D-printed inserts cut cooling time on thick-walled parts
Hot Runner vs Cold Runner
Hot runners cost more upfront but save material on every shot and shorten cycle time by 10–20% over cold runner systems
Surface Texture (SPI A1–C3, VDI)
SPI A1 mirror polish for clear PC lenses; SPI B for cosmetic ABS housings; VDI textures for grip surfaces and disguising flow marks
Expected Tool Life & Maintenance Plan
Tool maintenance every 50,000–100,000 shots; spare gates, ejector pins, and springs kept on hand for high-wear components
Recommended Capabilities
CNC Machining
Rapid Injection Molding
Vacuum Casting
Sheet Metal Fabrication
Additive Manufacturing
Surface Finishing
Related Case Studies
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Ultimate Tensile Strength (UTS): What It Measures and How to Read It on an MTR
Bulk Modulus in Engineering Materials: Compressibility, Elastic Constants, Measurement Limits and Design Use
Tensile Stress in 3D-Printed Parts: Formula, Stress-Strain Data, Anisotropy, Test Methods and Design Limits
Modulus of Elasticity vs Strength: What Stiffness Means for CNC Part Design
Nickel and Nickel Alloys for Machining: Corrosion, Heat, Work Hardening and Tooling
Why Work With EPOC CRAFTER
Prototyping shops usually run one or two processes. A CNC house can’t pour PU resin; a 3D print bureau can’t bend sheet metal. Project that needs three different processes ends up split across three vendors, with three lead times and three sets of shipping costs.
Epoc Crafter runs CNC, 3D printing, vacuum casting, sheet metal, and prototype injection molding under one roof. One quote, one project manager, one delivery date. When the bracket needs to ship with the housing and the housing needs to ship with the silicone seal, all three come from the same building.
Get Your Production Mold Quoted
Send your part file and annual volume. We quote steel grade, cavity count, hot or cold runner, expected tool life, and per-part cost at your target volume. One supplier from T0 sample to mass production.
Need tooling plus full production support? See End-to-End Manufacturing →
Production Tooling: Common Questions
Questions that come up before most tooling programs get started.
A two-cavity P20 steel tool for a 100×100mm part runs $15,000 to $25,000. The same part in a four-cavity H13 hot-runner tool runs $40,000 to $70,000. The main cost drivers are cavity count, part size, steel grade, and feature complexity (undercuts, slides, lifters, hot runners). We quote tooling cost, expected tool life, and per-part cost at your target volume together so the comparison is apples to apples.
P20 is the standard starting point, handles 200,000 to 300,000 shots before rework, and suits most structural and non-cosmetic parts. NAK80 machines to a mirror finish and works for high-gloss consumer parts. H13 handles high-temperature resins and abrasive materials like glass-filled nylon. S136 stainless runs 500,000 or more shots and resists corrosion from PVC or chlorine-based release agents. Picking a cheaper steel grade to save upfront cost on a 500,000-piece program usually means mid-run tooling rework. We recommend steel grade after reviewing your resin, cycle volume, and surface finish requirements during DFM review.
Single-cavity tools for simple geometries: 4 to 5 weeks. Multi-cavity tools with slides or lifters: 6 to 10 weeks. Hot-runner systems: 8 to 12 weeks. After T0 sample, allow 2 to 3 weeks for trial adjustments and approval before mass production starts. Lead time is driven by steel cutting and fitting, not part complexity. If your program has a hard launch date, share it at the quoting stage so we can confirm the schedule before cutting steel.
STEP file for the molded part, 2D drawing with critical tolerances and GD&T callouts, resin type, target annual volume, and surface finish requirements (SPI grade or VDI texture). If you have a BOM with multiple molded parts, send all files together. Cross-part interface review at the quoting stage catches tolerance stack-up issues before steel is cut. More on DFM requirements on the DFM Design Guidelines page.
Yes. NDA signed before file review. Tooling designs, part geometry, and production volumes are treated as confidential. Engineers assigned to the program sign confidentiality agreements. Mold designs and part files are never shared with third parties or reused for other customers. Full data handling policy on the Security & Compliance page.
The customer owns the mold once full payment is received. Ownership and custody terms are stated in the tooling agreement before manufacturing starts. The mold can be transferred to another facility on request, though most customers leave it in-house for ongoing production. Mold storage, maintenance schedule, and transfer conditions are confirmed in writing before T0 sample.
T0 is the first parts off the new mold. We check fill, flash, dimensional accuracy on critical features, cosmetic quality, and cycle time. Most tools need 1 to 3 trial rounds (T0, T1, T2) before approval. Adjustments to gate size, cooling, or ejection are common at T0 and are included in the tooling scope. A small production run of 50 to 200 parts confirms process stability before full mass production starts. PPAP, ISIR, or customer-specific approval documentation is available on request. Details on our quality standards on the Quality & Certifications page.
Cold runner is simpler, lower upfront cost, and works for most programs under 200,000 shots per year. Hot runner eliminates runner waste, shortens cycle time by 10 to 20%, and pays back on high-volume programs or expensive resins where material savings add up. For a 500,000-piece program with a $2 per kg resin, a $12,000 hot runner system typically pays back within 100,000 shots. We calculate the breakeven during tooling design review and recommend based on your volume and resin cost.
Standard tooling payment: 50% deposit before mold design starts, 40% before T0 sample, 10% after customer approval. Production parts are invoiced separately per batch. Wire transfer (T/T) is standard. PayPal and major credit cards accepted for tooling programs under $20,000. For programs above $50,000, milestone-based payment schedules are available and confirmed before work starts. All terms set in writing before steel is cut.
